<span>carbohydrate is what the strand of mRNAi is known as.</span>
        
             
        
        
        
Question 2
D) Carbohydrates
        
             
        
        
        
B. <span>The thesis statement is the answer to the research question</span>
        
             
        
        
        
Answer:
Just took this - it is: by observing cellular respiration under the absence of light. 
Explanation:
 
        
             
        
        
        
How did stromatolites contribute oxygen to the early atmosphere?
by weathering of rocks
through photolysis
through methane degradation
through photosynthesis
Answer:
by weathering of rocks
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